# Is there a way to randomize the location of points within a PointSource over time for ParticleTracer

**URL:** https://discourse.paraview.org/t/is-there-a-way-to-randomize-the-location-of-points-within-a-pointsource-over-time-for-particletracer/11326
**Category:** ParaView Support
**Created:** [February 3, 2023, 3:23pm UTC](https://discourse.paraview.org/t/is-there-a-way-to-randomize-the-location-of-points-within-a-pointsource-over-time-for-particletracer/11326 "2023-02-03T15:23:09Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![moonlightcockroch](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/m/ba8739/32.png) [@moonlightcockroch](https://discourse.paraview.org/u/moonlightcockroch)
#### Post date: [February 3, 2023, 3:23pm UTC](https://discourse.paraview.org/t/is-there-a-way-to-randomize-the-location-of-points-within-a-pointsource-over-time-for-particletracer/11326/1 "2023-02-03T15:23:09Z")

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Hi,

I am trying to visualize a time-dependent flow with the ParticleTracer filter and am using a PointSource as my source while injecting particles at every time-step to get a pathline/streakline effect. I am having decent success; however, the fact that particles are seeded at the exact same locations for every time-step makes it look a little unrealistic. If I could simply displace the point-source locations by some random, small amount each time I inject particles, I imagine I could get a very realistic smoke effect.

I’m sure there is a way to do this, but I haven’t been able to figure it out. I would greatly appreciate any suggestions that any of you might have to accomplish this.

Thanks a lot.